ExitCode still 0 after unsuccessful run

After an unsuccessful run of mHM with errors like

      Reading LAI ...
***ERROR: read_nc: mHM generated x and y are not matching NetCDF dimensions

or

    read precipitation        ...
***ERROR: length of time dimension needs to be at least 2 in file

it still exits with exitcode 0, suggesting that the run was successful. This makes monitoring and accounting of mHM runs more difficult, as the queuing system reports a successful run. This is especially a problem when running multiple instances of mHM parallelly. In contrast, when an input files is missing, mHM exits with exitcode 1, indicating that the run failed.

From my point of view, the ideal behavior would be that mHM exits with exitcode 1 if any error makes the run unsuccessful.